202120021222 has 32 divisors (see below), whose sum is σ = 351302745600. Its totient is φ = 85420484928.

The previous prime is 202120021183. The next prime is 202120021241. The reversal of 202120021222 is 222120021202.

It is a junction number, because it is equal to n+sod(n) for n = 202120021196 and 202120021205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6749679 + ... + 6779557.

It is an arithmetic number, because the mean of its divisors is an integer number (10978210800).

Almost surely, 2^202120021222 is an apocalyptic number.

202120021222 is a deficient number, since it is larger than the sum of its proper divisors (149182724378).

202120021222 is a wasteful number, since it uses less digits than its factorization.

202120021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36580.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 202120021222 its reverse (222120021202), we get a palindrome (424240042424).

The spelling of 202120021222 in words is "two hundred two billion, one hundred twenty million, twenty-one thousand, two hundred twenty-two".